Magnetism

Magnetism
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Explain the real reason behind electromagnetic induction.?
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A sensitive electronic device of resistance 175 is to be connected to a source of emf by a switch.
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424
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An electron is moving in XY- plane, making an angle relative to the position X-axis. The specific charge of an electron is 1.758 x 10 par11 C kg-1.
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410
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An observer A and a charge Q are fixed in a stationary frame F. Another observer B is fixed in a frame f, which is moving wrt to F. then
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489
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A bar magnet of length 3cm has points A and B along its axis at distances of 24cm and 48cm on the opposite sides. How to calculate the ratio of magnet
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450
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A coil and a bulb are connected in series. On inserting the soft iron core into the core light will light be?
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390
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What is the difference of magnetisation and magnetic intensity ? and how to find direction of magnetic intensity?
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370
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What is meant by this line "The coild is placed in a magnetic field in such a way that its line is parallel to the direction of magnetic intensity’"?
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617
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What is normal rection if a weight of 600kg is kept on tha inclined plane at 30sec.
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418
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What is magnetic entropy change? For my knowledge, I know entropy is randomness or disorder. So here that magnetic refers to the magnetic dipole momen
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445
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